Device for graduating lines on ruled paper



B. SHA'TZ. DEVICE FOR GRADUATING LINES 0N RULED PAPER.

APPLICATION FILED 1AN.21, 1921.

1,422,892, Patented July 18, 1922.

gvwa'nto z 11$, 6111296440135 FEQE.

BARNETT SI-IATZ, OF BUENOS AIRES, ARGENTINA.

DEVICE FOR GBADUATING LINES 0N RULED PAPER.

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Specification of Letters Patent.

Patented July 18, 1922.

Application filed J'anuary 21, 1921. Serial No. 438,970.

To (M1071 0m it may concern Be it known that l, BARNETT SHATZ, a citizen of the United States, residing at Buenos Aires Argentine Republic, have invented new and useful Improvements in Devices for Graduating Lines on Ruled Paper of which the following is a specification. v

This invention relates to improvements in line-spacing mechanism for typewriters and more particularly to the line-spacing mechanism disclosed in my pending application Serial No. 372940, filed April 19th, 1920.

The primary object of the invention is to provide a spacing mechanism capable of very minute adjustments so that the mechanism may be arranged to accommodate variously spaced lines on lined or ruled paper, and which will also permit the typewriter platen roll to be readily. shifted to the proper position for correcting the matter in a typewritten line.

Another object of the invention is to furnish an inexpensive simple construction which may be substituted for the spacing mechanism now employed on various typewriting machines.

With the foregoing objects outlined and with other objects in view which will appear as the description proceeds, the invention consists in the novel features hereinafter described in detail, illustrated in the accom panying drawing, and more particularly pointed out in the appended claims.

Referring to the drawing:

Figure 1 is a top plan view of the improved mechanism, with the primary ele ments spaced apart for the purpose of clear ness.

Fig. 2 is a vertical longitudinal sectional view of the parts shown in Fig. 1.

Fig. 3 is an end View viewed from the right in Figure 1.

Fig. 1 is a transverse vertical sectional view of the mechanism but showing the pri mary elements in their operative position.

In the drawing, 2 designates the platen roll shaft of a typewriting machine to which is adjustably fixed a hollow wheel 1 having a hub secured to the shaft by means of a screw 3 which may be reached through an aperture 1 in the periphery of the wheel. The parts as shown in Figures 1 and 2 with the wheel 1 separated form a disk or wheel 5 with which it cooperates, but in actual practice the member 5 is arranged within the wheel 1 as shown in Figures 3 and 4.

The member 5 is provided with an aperture 11, by which it is rotatably mounted on a boss 12 extending from the hub of the wheel 1. The disk or wheel 5 is split transversely by a slot 6 and the portions sep arated by said slot arelconnected together by the unbroken portion 7 shown in Fi 'ure 2. The portion 8 of the wheel is also split longitudinally in order to accommodate a lever 9 which is pivotally mounted at 10 o and its connected parts fit within the periphery of the member 1, and when the halves of the portion 8 and the lever 9 are in the position shown in Figure 1, the memher 5 may freely turn about the shaft- 2 without causing corresponding rotation of the member 1 and shaft.

An arm 13 is fixed to the member 5 by means of ascrew 14.- and this arm is adapted to engage a screw not shown which limits the movement of the arm 13 in one direction'about the shaft 2. The eye 15 on the arm 13 is adapted to engage a spring (not shown) employed for moving the arm 13 in the same direction.

An operating member or slide 16 mounted on the frame of the typewriting machine (not shown) is provided with a projecting pin 17 adapted, when the member 16 is moved in the direction of the arrow at to engage the lever 9 and swing the same about its pivot 10 so that the free ends of the halves of the portion 8 will be caused to separate and thus force said two halves into engagement with the inner surface of the periphery of the member 1, so that the memher 5 will cause rotation of the member 1.

From the foregoing it will be understood that when pressure is exerted on the member 16 the pin 17 will operate the member 9, this member will separate the halves of the portions and these halves will bind against the member 1 to cause rotation of the shaft 2. The extent of movement of said shaft will be regulated by the screw (not shown) heretofore mentioned which engages the arm 13, and this screw is clearly shown in applicants copending application hereinbetore mentioned.

It is believed that the above description taken in connection with the drawing, will enable those skilled in the art to readily understand the construction, operation and advantages of the present invention, and I am aware that various changes may be made in the construction illustrated without departing from the spirit of the invention as expressed in the following claims.

hat I claim and desire to secure by Let'- ters-Patent is:

1. In a typewriting machine, a platen roll shaft, a hollow wheel lixed thereto and adapted to be turned by the operator for adjusting the platen roll, a second wheel rotatable about said shaft and having a portion extending w'thin the first mentioned hollow wheel, the second mentioned wheel being provided with integral resilient segments, a lever pivotally mounted on the second mentioned wheel and extending between the ends of said segments, an operating member for swinging said lever about its pivot in one direction to cause said segments to separate and engage the inner suri'aee o't said hollow wheel, and means fixed to said second. wheel and adapted to engage a spring for moving the second wheel in the opposite direction.

2. A mechanism of the hind defined by claim 1 in which the hollow wheel is provided with means for adjustal'ily fixing the same to said shaft so that it may be slid along the shaft and placed around the second wheel.

A mechanism of the kind detined by claim l in which the second mentioned wheel includes a disk and a peripheral rim, said peripheral rim being provided with a transverse slot separating said segments from the main portion of the second mentioned wheel, and the peripheral rim of said second mentioned wheel also having an axially extendin slot adapted to receive said lever.

4-. In a typewriting machine, line spacing mechanism comprising a platen roll shaft, a hollow wheel fixed to said shaft, adapted to be turned by the operator for adjusting the platen roll and having a peripheral rim, a second oscillatable wheel rotatable about said shaft and including a disk having a peripheral rim which c:"itends within the rim of the hollow wheel, the peripheral rim of the second wheel being provided with a trans verse slot, which divides the rim of the second wheel into two integral portions, one of said portions being split in the direction of the axis 01 said shaft to provide oppositely disposed resilient segments, a lever pivotally mounted on the second wheel and having a portion extending between the ends of said segments and another portion extending outwardly beyond the second wheel, a slidable operating member having a projecting portion engageable with the outwardly extending portion of tl e lever for causing operation of the same, and a member fixed to the second. wheel and adaptedto engage a spring to:- moving the second wheel in a direction opposite to that in which it is moved by said slidable member, said member being also adapted to cooperate with adjusting means tor determining the distance between the typewritten lines.

in testimony whereof I have signed my name to this specification in the presence ol' two subscribing witnesses.

BARNETT SHATZ.

Witnesses RAND VERDEF, V. lnLannz. 

